HDFS-11339. Fix import.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java

@@ -26,9 +26,9 @@ import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.server.datanode.fsdataset.DataNodeVolumeMetrics;
 import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
 import org.apache.hadoop.util.Time;
-import org.jboss.netty.util.internal.ThreadLocalRandom;
 
 import javax.annotation.Nullable;
+import java.util.concurrent.ThreadLocalRandom;
 
 /**
  * Profiles the performance of the metadata and data related operations on
@@ -138,4 +138,4 @@ class ProfilingFileIoEvents {
     }
     return null;
   }
-}
+}